EP2994288A1 - Procédé et dispositif permettant de faire fonctionner un filtre de cage d'écureuil - Google Patents

Procédé et dispositif permettant de faire fonctionner un filtre de cage d'écureuil

Info

Publication number
EP2994288A1
EP2994288A1 EP14722641.9A EP14722641A EP2994288A1 EP 2994288 A1 EP2994288 A1 EP 2994288A1 EP 14722641 A EP14722641 A EP 14722641A EP 2994288 A1 EP2994288 A1 EP 2994288A1
Authority
EP
European Patent Office
Prior art keywords
wheel
cleaning
sieve
drive
cleaning agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14722641.9A
Other languages
German (de)
English (en)
Other versions
EP2994288B1 (fr
Inventor
Detlef Gneuss
Stephan Gneuss
Daniel Gneuss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gneuss GmbH
Original Assignee
Gneuss GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gneuss GmbH filed Critical Gneuss GmbH
Priority to PL14722641T priority Critical patent/PL2994288T3/pl
Publication of EP2994288A1 publication Critical patent/EP2994288A1/fr
Application granted granted Critical
Publication of EP2994288B1 publication Critical patent/EP2994288B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/27—Cleaning; Purging; Avoiding contamination
    • B29C48/2725—Cleaning; Purging; Avoiding contamination of filters
    • B29C48/273—Cleaning; Purging; Avoiding contamination of filters using back flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/69—Filters or screens for the moulding material
    • B29C48/691—Arrangements for replacing filters, e.g. with two parallel filters for alternate use
    • B29C48/6914—Arrangements for replacing filters, e.g. with two parallel filters for alternate use the filters being fitted on a rotatable or pivotable disc or on the circumference of a rotatable or pivotable cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92514—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92961—Auxiliary unit, e.g. for external melt filtering, re-combining or transfer between units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/9299—Treatment of equipment, e.g. purging, cleaning, lubricating or filter exchange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/27—Cleaning; Purging; Avoiding contamination
    • B29C48/2725—Cleaning; Purging; Avoiding contamination of filters

Definitions

  • the invention relates to a method for operating a Siebradfilters for highly viscous melts with pressures> 10 bar and temperatures> 90 ° C, the Siebrad is rotationally driven stepwise and arranged in the Siebrad Siebein anatomy in a backwash cleaning station successively from a generated by a detergent drive current of detergent is acted upon, and a Siebradfilter for carrying out the method.
  • Siebradfilter with a corresponding backwash cleaning station include z. B. by DE 103 26 487 A1 to the prior art.
  • sieve inserts are rotated out of the melt channel via a drive which acts on the sieve wheel and replaced by cleaned sieve inserts.
  • the backwash cleaning station As close as possible in the direction of rotation upstream of the melt channel is the backwash cleaning station, during which, during filter operation, i. with stationary sieve wheel, which is applied in the backwash cleaning station strainer by a generated in the detergent drive current of detergent.
  • the backwashing cleaning station is operated during the standstill times of the filter wheel.
  • a purified melt which is removed from the already purified melt stream for detergent drive, here a recoil piston in the backwash cleaning station.
  • the recoil piston When the recoil piston is actuated, the melt serving as the cleaning agent is forced through the sieve insert.
  • the sieve insert is flowed through by the cleaning agent in the opposite direction of the usual sieve direction, taking up the sieves collected in the sieve insert. Contaminants with, and then leads the impurities to an outlet. After cleaning the sieve insert this can be further rotated by one step and spent in the melt channel.
  • the width of the backwashing nozzle corresponds at least to the extent of the respective angle of rotation of a turning step.
  • the disadvantage here is that large quantities of cleaning agents are required for the required size of the backwashing nozzle in order to flood the sieve insert in the required width with cleaning agents, in particular in the edge regions of the sieve inserts there is often insufficient cleaning since here the melt pressure of the backwashing Cleaning station often no longer sufficient.
  • DE 39 02 061 A1 discloses a screening device for the purification of plastic melts, wherein during the rotation of the sieve wheel cleaning of the Siebeins decisivee located in the backwash cleaning station takes place. Due to the pressure prevailing in the melt channel, the already cleaned melt flows through the sieve inserts contrary to the usual sieve direction. A cleaning agent drive is not provided. An effective, melt-saving cleaning is not possible.
  • the melt which has already been purified flows continuously through the sieve inserts due to the pressure prevailing in the melt channel. Again, no active acting detergent drive is provided. Due to the permanent cleaning process, a great deal of the cleaning agent, i. the melt is wasted.
  • the object of the invention is to optimize the backwashing or cleaning of sieve inserts in such a way that fewer cleaning agents are used. is used, a better cleaning of the sieve inserts takes place and an energy saving is ensured.
  • the sieve wheel always has to be driven in rotation against the pressure built up in the melt channel. Ie. the sieve wheel is pressed by the melt against a housing inside the Siebradfilters, which can lead to sticking and / or tilting of the sieve wheel in the Siebradgeratiuse, in any case, the frictional resistance between the sieve and Siebradgephaseuse inner wall is significantly increased.
  • erfindungsgennäß can be easily reacted to their specific properties and desired rotational speeds of the screen wheel.
  • control or crizovorrichtyng parallel to the starting process for the rotation of the screen wheel (1) increases at least the detergent pressure compared to the pressure curve during the rotation of the screen wheel (1).
  • the object of the present invention is based on the device by means of a Siebradfilter for highly viscous melts with pressures> 10 bar and temperatures> 90 ° C, with a Siebeins decisive holder screen, and a drive associated with the screen, as well as with a backwash cleaning station, the detergent drive arranged downstream of the cleaning agent flow direction, formed as a slot nozzle backwashing, characterized in that a control or regulating device is provided which depends on the time course of the rotation of the screen wheel and / or in dependence on the rotational speed of the screen wheel and / or in Depending on a prevailing in the melt channel Siebzin prevailing differential pressure is able to adjust the amount of detergent and / or the detergent pressure
  • the slot nozzle Due to the inventive design of the slot nozzle is achieved that all areas of a sieve insert are swept in the radial direction of the nozzle, however, the area normal to the radial extent as a narrow nozzle is formed, in which built in the detergent drive pressure of the detergent optimal cleaning of the Filter insert guaranteed.
  • the slot nozzle has a height corresponding to the radial extent of the filter inserts to be cleaned and has a width of ⁇ 5 mm, or has a width which corresponds to ⁇ 7% of the height of the slot nozzle.
  • the drive wheel is assigned as a drive acting on the periphery of the screen wheel pawl drive.
  • the sieve wheel can be driven quickly via the jack drive.
  • relatively large angles of rotation can be realized per drive step, and an optimum cleaning of the sieve inserts is ensured despite a rapid exchange of the sieve inserts in the melt channel.
  • a quick change of contaminated Siebeinsvone with at the same time optimal cleaning of the channel to be rotated in the melt strainer inserts ensures a very variable, responsive to all possible pollution situations operation of the Siebradfilters.
  • the figure shows schematically a sieve wheel 1, in which representative of a large number of sieve inserts, the sieve inserts 2, 2 'are shown.
  • the sieve inserts 2 are each arranged between adjacent to the inner wall of the Siebradfiltergephaseuses webs 3, 3 ', 3 "The sieve insert 2 is located in front of the melt channel 4, while the sieve insert 2' in front of the cleaning slot 5 of the backwash cleaning station.
  • the cleaning slot 5 in the radial direction the dimensions of Siebein- set 2 'substantially sweeps, normal to the radial direction, however, a substantially smaller angle than the extension of the sieve insert 2' normal to the radial, but also sweeps over a smaller angle than the indicated angle of rotation 6 per stroke.
  • parameters can be preset to the control or regulating device 7 via an input 8; on the other hand, data such as differential pressure, rotational speed, charge state of the cleaning agent drive 9, etc., are available to the control or regulating device 7 via a data connection 10. Via a control connection 11, the control or regulating device 7 can influence the rotary drive 12 and / or the detergent drive 9 according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant de faire fonctionner un filtre de cage d'écureuil pour des masses fondues très visqueuses présentant des pressions >10 bar et des températures >90°C. Une cage d'écureuil (1) est progressivement entraînée en rotation, et des tissus métalliques (2) disposés dans la cage d'écureuil (1) sont exposés successivement, dans une station de nettoyage à lavage à contre-courant, à un courant de produit de nettoyage produit par un entraînement de produit de nettoyage (9). L'invention vise à optimiser ce procédé et ce dispositif, de telle manière qu'une quantité moindre de produit de nettoyage soit gaspillée, que les tissus métalliques soient mieux nettoyés et qu'une économie d'énergie soit garantie. A cet effet, le lavage à contre-courant dans la station de nettoyage à lavage à contre-courant a lieu pendant la rotation de la cage d'écureuil (1), la quantité du produit de nettoyage et/ou la pression du produit de nettoyage et/ou la vitesse d'écoulement du produit de nettoyage étant réglées au moyen d'un dispositif de commande ou de régulation (7) associé à l'entraînement de produit de nettoyage (9) en fonction de la variation dans le temps de la rotation de la cage d'écureuil (1) et/ou en fonction de la vitesse de rotation de la cage d'écureuil (1) et/en fonction d'une pression différentielle régnant sur le tissu métallique (2) situé dans le canal de masse fondue (4), et l'ouverture effective de la buse à fente perpendiculairement à la direction radiale étant inférieure au trajet parcouru par la cage d'écureuil (1) pendant une étape d'entraînement.
EP14722641.9A 2013-05-10 2014-05-05 Procédé permettant de faire fonctionner un filtre de cage d'écureuil Active EP2994288B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14722641T PL2994288T3 (pl) 2013-05-10 2014-05-05 Sposób napędzania filtra koła sitowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013208637.7A DE102013208637A1 (de) 2013-05-10 2013-05-10 Verfahren und Vorrichtung zum Betreiben eines Siebradfilters
PCT/EP2014/059088 WO2014180776A1 (fr) 2013-05-10 2014-05-05 Procédé et dispositif permettant de faire fonctionner un filtre de cage d'écureuil

Publications (2)

Publication Number Publication Date
EP2994288A1 true EP2994288A1 (fr) 2016-03-16
EP2994288B1 EP2994288B1 (fr) 2018-12-12

Family

ID=50685906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14722641.9A Active EP2994288B1 (fr) 2013-05-10 2014-05-05 Procédé permettant de faire fonctionner un filtre de cage d'écureuil

Country Status (8)

Country Link
US (1) US10065355B2 (fr)
EP (1) EP2994288B1 (fr)
JP (1) JP6073522B2 (fr)
CN (1) CN105246666B (fr)
BR (1) BR112015025956B1 (fr)
DE (1) DE102013208637A1 (fr)
PL (1) PL2994288T3 (fr)
WO (1) WO2014180776A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105688493A (zh) * 2016-04-19 2016-06-22 苏州逸新和电子有限公司 一种密度可变的过滤网
US11260570B2 (en) * 2018-05-07 2022-03-01 PSI-Polymer Systems, Inc. Filtration apparatuses and screen changer devices for polymer processing and related methods
DE102018120445B3 (de) * 2018-08-22 2020-01-02 Gneuss Gmbh Filtriervorrichtung für hochviskose Medien
CN111804033B (zh) * 2020-07-16 2021-11-05 北京乾景园林股份有限公司 一种河道治理淤泥清理、杂物分离一体化处理方法
CN113522026B (zh) * 2021-06-24 2023-06-16 合肥云雀智能科技有限公司 一种具备泄压机构的超滤设备反冲洗装置
CN113681750A (zh) * 2021-08-21 2021-11-23 张传雷 一种聚苯乙烯颗粒及聚苯乙烯颗粒的制备方法
CN114471844B (zh) * 2022-02-14 2023-05-09 江苏龙净科杰环保技术有限公司 一种催化剂筛灰研磨方法
DE102022133307A1 (de) 2022-11-08 2024-05-08 WELA-Plast GmbH Verfahren und Vorrichtung zum Reinigen von Filterscheiben

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US3146494A (en) 1961-11-13 1964-09-01 Nat Rubber Machinery Co Extruder with reverse flow flushed breaker plate assembly
CH593786A5 (en) * 1976-03-17 1977-12-15 Riwisa Ag Continuously cleaned filter for extrusion moulder - rotates eccentrically to main feed passage and is cleaned by reverse flow
US4486304A (en) 1982-06-17 1984-12-04 Neuman Clayton L Apparatus for continuously filtering plastic melt with noninterruptive purge
DE3902061A1 (de) 1989-01-25 1990-07-26 Gneuss Kunststofftechnik Gmbh Siebvorrichtung zur reinigung von kunststoffschmelzen
DE4002290A1 (de) 1990-01-26 1991-08-01 Ek Geraetebau Gmbh Rueckspuelbares filtergeraet
US5090087A (en) 1991-04-12 1992-02-25 The Babcock & Wilcox Company Hub assembly for sootblower
CA2205450C (fr) * 1997-05-14 2001-07-24 Alfredo Bentivoglio Filtre de filiere d'extrusion
DE29908735U1 (de) * 1999-05-18 1999-09-02 KoSa GmbH & Co. KG, 60528 Frankfurt Filtereinrichtung für die Reinigung von Kunststoffschmelzen
DE19961426B4 (de) 1999-12-17 2004-04-08 Gneuß Kunststofftechnik GmbH Anordnung zum Filtern von Kunststoffschmelzen
DE10225601A1 (de) * 2002-06-07 2003-12-24 Gneuss Kunststofftechnik Gmbh Reinigungsvorrichtung für Siebscheiben
JP2004142283A (ja) * 2002-10-25 2004-05-20 Taiboo:Kk 押出機用フィルタ交換ユニット及び同ユニットを使用した押出機
DE10326487A1 (de) * 2003-06-10 2005-01-05 Gneuß Kunststofftechnik GmbH Vorrichtung zur Bereitstellung einer Schmelze
DE10358672A1 (de) * 2003-12-12 2005-07-21 Gneuß Kunststofftechnik GmbH Schmelzfilter für die Reinigung von Kunststoffschmelzen
DE102006056471A1 (de) 2006-11-28 2008-05-29 Gneuß Kunststofftechnik GmbH Schmelzefilter
AT509706B1 (de) * 2010-07-05 2011-11-15 Erema Filtriervorrichtung für fluide
DE102010036810B4 (de) * 2010-08-03 2018-05-30 Nordson Holdings S.À R.L. & Co. Kg Schmutzabscheider für hochviskose Medien
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JP2012239999A (ja) * 2011-05-20 2012-12-10 Umg Abs Ltd エレメントホルダ及びフィルタユニット

Also Published As

Publication number Publication date
US10065355B2 (en) 2018-09-04
JP6073522B2 (ja) 2017-02-01
EP2994288B1 (fr) 2018-12-12
BR112015025956B1 (pt) 2020-12-08
JP2016518280A (ja) 2016-06-23
WO2014180776A1 (fr) 2014-11-13
CN105246666B (zh) 2017-06-20
DE102013208637A1 (de) 2014-11-13
CN105246666A (zh) 2016-01-13
BR112015025956A2 (pt) 2017-07-25
PL2994288T3 (pl) 2019-04-30
US20160059465A1 (en) 2016-03-03

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